Observation of optical field induced first-order electric Freedericksz transition and electric bistability in a parallel aligned nematic liquid-crystal film

Wu, J. J.; Ong, Gan-Sing; Chen, Shu-Hsia
November 1988
Applied Physics Letters;11/21/1988, Vol. 53 Issue 21, p1999
Academic Journal
Optical field induced first-order electric Freedericksz transition and electric bistability in a homogeneously aligned nematic film is first observed. It is experimentally demonstrated that an applied optical field can transform the electric Freedericksz transition from second order to first order. The molecular reorientation as a function of electric field is then characterized by a hysteresis loop which exhibits the electric bistability. The results are in good agreement with theoretical predictions.


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